1、Designation:E1015American Association State Highwayand Transportation Officials StandardAASHTO No.:T7086Standard Test Method forBrinell Hardness of Metallic Materials1This standard is issued under the fixed designation E10;the number immediately following the designation indicates the year of origin
2、aladoption or,in the case of revision,the year of last revision.Anumber in parentheses indicates the year of last reapproval.Asuperscriptepsilon()indicates an editorial change since the last revision or reapproval.This standard has been approved for use by agencies of the U.S.Department of Defense.1
3、.Scope*1.1 This test method covers the determination of the Brinellhardness of metallic materials by the Brinell indentationhardness principle.This standard provides the requirements fora Brinell testing machine and the procedures for performingBrinell hardness tests.1.2 This standard includes addit
4、ional requirements in fourannexes:Verification of Brinell Hardness Testing MachinesAnnex A1Brinell Hardness Standardizing MachinesAnnex A2Standardization of Brinell Hardness IndentersAnnex A3Standardization of Brinell Hardness Test BlocksAnnex A41.3 This standard includes nonmandatory information in
5、 anappendix which relates to the Brinell hardness test:Table of Brinell Hardness NumbersAppendix X1Examples of Procedures for DeterminingBrinell Hardness UncertaintyAppendix X21.4 At the time the Brinell hardness test was developed,theforce levels were specified in units of kilograms-force(kgf).Alth
6、ough this standard specifies the unit of force in theInternational System of Units(SI)as the Newton(N),becauseof the historical precedent and continued common usage of kgfunits,force values in kgf units are provided for information andmuch of the discussion in this standard refers to forces in kgfun
7、its.1.5 This standard does not purport to address all of thesafety concerns,if any,associated with its use.It is theresponsibility of the user of this standard to establish appro-priate safety and health practices and determine the applica-bility of regulatory limitations prior to use.2.Referenced D
8、ocuments2.1 ASTM Standards:2E29 Practice for Using Significant Digits in Test Data toDetermine Conformance with SpecificationsE74 Practice of Calibration of Force-Measuring Instrumentsfor Verifying the Force Indication of Testing MachinesE140 Hardness Conversion Tables for Metals RelationshipAmong B
9、rinell Hardness,Vickers Hardness,RockwellHardness,Superficial Hardness,Knoop Hardness,Sclero-scope Hardness,and Leeb HardnessE384 Test Method for Knoop and Vickers Hardness ofMaterials2.2 American Bearings Manufacturer Association Stan-dard:ABMA 10-1989 Metal Balls32.3 ISO Standards:ISO/IEC 17011 Co
10、nformity AssessmentGeneral Require-ments for Accreditation Bodies Accrediting ConformityAssessment Bodies4ISO/IEC 17025 General Requirements for the Competenceof Calibration and Testing43.Terminology and Equations3.1 Definitions:3.1.1 calibrationdetermination of the values of the sig-nificant parame
11、ters by comparison with values indicated by areference instrument or by a set of reference standards.3.1.2 verificationchecking or testing to assure confor-mance with the specification.1This test method is under the jurisdiction of ASTM Committee E28 onMechanical Testing and is the direct responsibi
12、lity of Subcommittee E28.06 onIndentation Hardness Testing.Current edition approved May 1,2015.Published June 2015.Originallyapproved in 1924.Last previous edition approved in 2014 as E10 14.DOI:10.1520/E0010-15.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Custom
13、er Service at serviceastm.org.For Annual Book of ASTMStandards volume information,refer to the standards Document Summary page onthe ASTM website.3Available from American Bearing Manufacturers Association(ABMA),2025M Street,NW,Suite 800,Washington,DC 20036,http:/www.americanbearings.org.4Available f
14、rom American National Standards Institute(ANSI),25 W.43rd St.,4th Floor,New York,NY 10036,http:/www.ansi.org.*A Summary of Changes section appears at the end of this standardCopyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 3.1.3 standardiz
15、ationto bring in conformance with aknown standard through verification or calibration.3.1.4 Brinell hardness testan indentation hardness testusing a verified machine to force an indenter(tungsten carbideball with diameter D),under specified conditions,into thesurface of the material under test.The d
16、iameter of the resultingindentation d is measured after removal of the force.3.1.5 Brinell hardness numbera number,which is propor-tional to the quotient obtained by dividing the test force by thecurved surface area of the indentation which is assumed to bespherical and of the diameter of the ball.3.1.6 Brinell hardness scalea designation that identifiesthe specific combination of ball diameter and applied forceused to perform the Brinell hardness test.3.1.7 Brinell hardness testing machinea Bri